It isn't scheduled to be released until October, but Microsoft is ramping up its marketing campaign for Halo 5: Guardians with a tantalising new trailer.
The video aired in the US on Sunday evening following the Season 5 climax of The Walking Dead, and hints that Master Chief has turned traitor, with Spartan Locke tasked with hunting him down.
And of course, the fate of the entire galaxy depends on the mystery being solved...
https://www.youtube.com/watch?v=9rd8FWUCCZk
